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Bailey Island Bridge
Society: ASCEMain Category: CivilSub Category: Bridges, TransportationEra: 1920-1929DateCreated: 19281958 Harpswell Islands RdHarpswellState: MEZip: 04003Country: USAWebsite: http://www.asce.org/project/Bailey-Island-Bridge/Creator: Edwards, Llewelyn

Hardy fishermen and their families have long inhabited Bailey Island, which was settled in the 1720s. Ordinarily, they did not mind crossing to the mainland in their fishing boats. But before the Bailey Island Bridge was built, during certain seasons of the year when violent storms battered the coast, it was impossible to leave the island.

YearAdded:
1983
Image Credit: Courtesy Flickr/Swruler9284 (CC BY 2.0)Image Caption: A panoramic view of the length of the Bailey Island BridgeEra_date_from: 1928
Atlantic City Convention Hall
Society: ASCEMain Category: CivilSub Category: BuildingsEra: 1920-1929DateCreated: 1926-19292301 BoardwalkAtlantic CityState: NJZip: 08401Country: USAWebsite: http://www.asce.org/project/atlantic-city-municipal-convention-center/Creator: Lockwood-Greene & Co.

The quantities of materials used in the building are staggering: 12,000 tons of structural steel; 42,000 cubic yards of concrete - consisting of 65,000 barrels of cement and 25,000 tons of sand; 360,000 feet of piling; and 10,000,000 bricks. At the time of its construction, Atlantic City Municipal Convention Hall was believed to be the world's largest hall, capable of seating 40,000 people. It continues to serve as a meeting place for shows, pageants, sporting events, and conventions. It is a structure of heroic proportions.

YearAdded:
1983
Image Credit: Courtesy Flickr/Paul Lowry (CC BY 2.0)Image Caption: The Atlantic City Convention Hall maintains its magnificence even as it approaches 90 years of age.Era_date_from: 1926
Ascutney Mill Dam
Society: ASCEMain Category: CivilSub Category: DamsEra: 1830-1839DateCreated: 1834Mill BrookWindsorState: VTZip: 05089Country: USAWebsite: http://www.asce.org/Project/Ascutney-Mill-Dam/Creator: Beard, Ithamar , Cobb, Simeon

Ithamar A. Beard, an engineer of some prominence in New England, surveyed the mill brook and selected the best site for a storage dam. Contractor Simeon Cobb, knowledgeable of contemporary civil engineering practices, made major changes to the dam's original design, converting the linear dam into a gentle arch.

YearAdded:
1970
Image Credit: Courtesy Wikipedia/Ymblanter (CC BY-SA 3.0)Image Caption: The Ascutney Mill Arch-Gravity DamEra_date_from: 1834
Arroyo Seco Parkway
Society: ASCEMain Category: CivilSub Category: Roads & RailsEra: 1940-1949DateCreated: 1940Pasadena to Los AngelesLos AngelosState: CACountry: USAWebsite: http://www.asce.org/project/arroyo-seco-parkway/Creator: Allen, T.D.

With its landscaped embankments, limited access, and depressed roadway, Arroyo Seco Parkway (now known as the Pasadena Freeway) became the prototype of the Los Angeles freeway system. Motorists enjoy a scenic drive featuring landscaped embankments lush with native chaparral. The curving alignment traverses a chain of small parks shaded by sycamores and eucalyptus and exposed views of the snow-capped San Gabriel Mountains.

YearAdded:
1999
Image Credit: Courtesy Flickr/prayitno (CC BY 2.0) Image Caption: Arroyo Seco Parkway (also called the Pasadena Freeway) as it is seen today by thousands of commutersEra_date_from: 1940
Bonneville Dam, Columbia River System
Society: ASCEMain Category: Civil, ElectricalSub Category: Dams, Power Generation, Power, Energy & Industry ApplicationEra: 1930-1939DateCreated: 1938Colombia RiverPortlandState: ORZip: 97014Country: USAWebsite: http://www.asce.org/project/bonneville-dam,-columbia-river-power---nav-system/Creator: U.S. Army Corps of Engineers

The Bonneville Dam, Columbia River Power and Navigation System consists of 55 major projects on Oregon's Columbia River and is said to be the largest hydroelectric system in the world.

The Columbia River forms part of the border between Washington and Oregon and flows inland through the only waterway that crosses the Cascade Mountains. To harness the energy of the ninth longest river in North America, engineers developed unique design and construction approaches to overcome problems caused by depth of water, current velocity, and an irregularly-shaped river bottom.

YearAdded:
1987
Image Credit: Courtesy Flickr/Ann Larie Valentine (CC BY-SA 2.0)Image Caption: The impressive power of the Bonneville DamEra_date_from: 1938
Armour-Swift-Burlington Bridge
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1910-1919DateCreated: 1911Missouri RiverKansas CityState: MOZip: 64106Country: USAWebsite: http://www.asce.org/project/armour-swift-burlington-bridge/Creator: Waddell, John Alexander Low

Work began in 1887 on the high-level truss "Winner Bridge" crossing the Missouri River at Kansas City. The piers were completed in 1890, but for financial reasons the project was suspended. John Alexander Low Waddell, renowned civil engineer, prepared an alternate design for a lift bridge in 1895, which would ultimately be built as the Armour-Swift-Burlington Bridge.

YearAdded:
1996
Image Credit: Courtesy Wikipedia/Americasroof (CC BY-SA 2.5)Image Caption: The Armour-Swift-Burlington Bridge it its lowered position over the Missouri RiverEra_date_from: 1911
George Washington Bridge
Society: ASCEMain Category: CivilSub Category: BridgesEra: 1930-1939DateCreated: 1931George Washington BridgeFort LeeState: NJZip: 07024Country: USAWebsite: http://www.asce.org/Project/George-Washington-Bridge/Creator: Ammann, Othmar

"An essential part of the human experience is to create an aesthetic atmosphere."

The George Washington Bridge represented a departure in suspension bridge design. Chief Engineer O.H. Ammann developed a system of stiffening trusses that offered greater flexibility and saved the project nearly $10 million. Initially, just six of the upper eight lanes were paved, but Ammann designed the bridge to easily accommodate a future lower level.

Swiss-born O.H. Ammann (1879-1965) was Chief Engineer for the Port Authority of New York and New Jersey during the bridge's construction. 

YearAdded:
1981
Image Credit: Original Image: Flickr/Marcin WicharyImage Caption: George Washington BridgeEra_date_from: 1931
Charleston - Hamburg Railroad
Society: ASCEMain Category: CivilSub Category: Roads & RailsEra: 1830-1839DateCreated: 1833CharlestonState: SCCountry: USAWebsite: https://www.asce.org/project/charleston-hamburg-railroad/Creator: Allen, Horatio

Built with a single set of tracks consisting of hardwood rails and wooden ties, and using wooden trestles to carry it over low-lying areas, the 136-mile Charleston-Hamburg Railroad was one of the longest railroads in the world when it was completed in 1833. It also became the first railroad in the United States to be powered entirely by steam, the first to carry mail under contract, and the first to provide regularly scheduled passenger service.

YearAdded:
1969
Image Credit: The earliest general map to show the South Carolina Canal and Rail Road Company's line which began in Charleston, S.C. It was completed to Hamburg, S.C., in 1833. Its 136 miles of track were then the longest in the world. Image Caption: Charleston - Hamburg Railroad, also known as Era_date_from: 1833
Allegheny Portage Railroad
Society: ASCEMain Category: CivilSub Category: Roads & RailsEra: 1830-1839DateCreated: 1834Hollidays burg to JohnstownDuncansvilleState: PAZip: 16635Country: USAWebsite: http://www.asce.org/project/allegheny-portage-railroad/Creator: Private Contractors

In an era when roads and canals were the most common means of overland transportation, the Allegheny Portage Railroad provided a novel alternative. The railway carried fully-loaded canal boats over the steep grades of the Allegheny Mountain. The 36-mile system rose almost 2,300 feet above sea level at its summit - the highest level to which canal boats had ever been carried. The project included ten double-tracked inclined planes, powered by steam engines. Its 900-foot Staple Bend Tunnel, cut from solid rock, was the first railroad tunnel constructed in America.

YearAdded:
1987
Image Credit: Public Domain (National Park Service)Image Caption: The Staple Bend Tunnel, completed 1834 for the Allegheny Portage RailroadEra_date_from: 1834
Alaska Highway
Society: ASCEMain Category: CivilSub Category: Roads & RailsEra: 1940-1949DateCreated: 1942Dawson Creek British ColumbiaDelta JunctionState: AKZip: 99737Country: USAWebsite: http://www.asce.org/project/alaska-highway/Creator: MacDonald, Thomas

The Alaska Highway, initially called the Alaskan-Canadian (Alcan) Military Highway, provided an essential transportation link to the Yukon and Alaska during World War II. It begins at the junction with several Canadian highways in Dawson Creek, British Columbia and runs to Delta Junction, Alaska, via Whitehorse, Yukon. After the shock of Pearl Harbor, the Alaska Highway was a first step in America's defense strategy -- a vital military supply line during the war. Over ten thousand Army Engineers were rushed to the far Northwest.

YearAdded:
1995
Image Credit: Courtesy Flickr/Bruce McKay (CC BY-SA 2.0)Image Caption: Driving on the Alaska Highway with a snowy mountain horizonEra_date_from: 1942
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